Cisco Firepower 2100 Series Hardware Installation Manual page 56

Rack-Mount the Chassis Using Slide Rails
Slide rail assemblies work with four-post racks and cabinets with square slots, round 7.1mm holes, #10-32
threaded holes, and #12-24 threaded holes on the rack post front. The slide rail works with front to back
spacing of rack posts from 24 to 36 inches. The rack-mounting posts need to be 2 to 3.5 mm thick to work
with the slide rail rack mounting.
Step 1 Attach the slide-rail locking brackets to each side of the chassis using the six 8-32 x .375-in. countersink Phillips head
screws (three per side).
Figure 35: Attach the Slide-Rail Locking Bracket to the Side of the Chassis
1 Chassis
8-32 x 0.25-in. countersink Phillips head screws (3 per
3
side)
Step 2 (Optional) Attach the cable management bracket to the slide-rail locking bracket:
a) Install the cable management studs into the slide-rail locking bracket.
Cisco Firepower 2100 Series Hardware Installation Guide
52
2 Slide-rail locking bracket
Mount the Chassis